Physiological indicators of growth and production of faba bean (Vicia faba L)

Physiological indicators of growth and production of faba bean were quantified on the basis of pot and field trials. Pot trials were established by the method of gradual sowing rates during the growing season in partially controlled conditions of external environment. Experimental results on physiological indicators of growth and production: net output of photosynthesis NAR, specific rate of growth RGR, rate of dry matter increment per area CGR, leaf area index LAI, relative leaf area LAR, data on average daily temperature T and intensity of solar radiation I-GR are presented in the paper. Regression dependence of NAR, T and I-GR was found. This information can be used for the needs of mathematical modelling of crop models of growth and production. Field model trials were established to study the effect of density ranging from 23.0 to 139.0 plants per 1 m(2) of stand on physiological characteristics of growth and production. Regression dependence NAR = f(LAI) was set on a broad interval of stand density. It was found that CGR more depends on LAI than on NAR. Stand density control results in the changes of LAI, NAR and other physiological indicators of growth and production.